Brazing and welding flux



lit)

Mental Jan. 28, 1941 UNITED. STATES aezaeca OFFICE BRAZIN G AND WELDINGUK" Augustus A. Merrill, Steele, N. Wak.

No Drawing. Application November 15, 1939, Serial N0. 304,552

l Claim. (cl, lie-2t) This invention refers to that class of compoundscommonly known as flux and used in the process of oxy-acetylene or arcwelding of metals and consists of a composition formed by the mixing orrefined powdered borax, pulverized iron sulphate-copperas, and apulverized strong potassium carbonate commonly known as Lewis lye.

To prepare this composition, take:

20 ounces of borax,

ll ounce of iron su1phate-copperas, and, 1% ounces of strong potassiumcarbonate commonly known as Lewis lye,

min the same together and then grind or pullveriae the mixture to a finepowder; stirring the same until the ingredients in powder form arewellrnlned.

The pulverization of the ingredients is for convenience cl applicationand reliability of action.

The proportions seem to be essential to success I but I have succeededwhen a degree of variance cl proportions in the above proportions havebeen using the above composition as a flux.

This nux may be applied directly in powdered form to the heated parts tobe welded or brazed I or may be applied to the welding or brazing metal10 by heating the latter toa red heat and then immersing-the same intothe powdered flux to which it adheres and because of the heat upon thewelding or brazing metal the flux will now to the parts to be welded. l5

I claim:

A welding flux compound consisting by weight of approximately 20 partsof borax, 1 part iron sulphate (copperas), and 1 /2 parts potassiumcarbonate (Lewis lye) m AUGUSTUS A. MERRILL.

